Some customers don't want one of something. A café wants coffee by the case, a school wants forty of the same calculator, a reseller wants a better price for a bigger order. Selling to them on the same store as everyone else needs a few rules: how few they can buy, in what multiples, how small an order is worth shipping, and a way to agree a price. This guide covers the B2B / Wholesale add-on for the PrizeX and BidKing shop: what each rule does, how price negotiation works from offer to order, and what the add-on deliberately doesn't do.
What the B2B / Wholesale add-on is
- An add-on for the shop: it builds on the Shop plugin and adds a B2B / Wholesale screen under Shop in the admin, with tabs for order minimums and price offers.
- Who has it: it's included in PrizeX. For BidKing and RaffKing it's an add-on, and BidKing Starter also needs the Shop add-on.
- Three tools: minimum quantities and case sizes per product, a minimum order value for the whole store, and price negotiation.
Minimum quantities and case sizes
On a product's edit form you can set two numbers:
- Minimum order quantity: the fewest a customer can buy. The first click on Add to Cart puts that many in the cart.
- Quantity increment: the case size. Each further click adds one more case, so a product sold in 12s goes 12, 24, 36.
The rules hold everywhere a product can be bought: the cart, Buy Now, checkout and the shop's purchase API. If stock drops below what's in a cart, the line is cut back to the nearest amount that still fits the rules, or removed. Checkout checks every line again, which catches items added before you set a minimum.
Only admins set these numbers. On a multi-vendor store, sellers can't set minimums on their own listings.
A minimum order value
- A store minimum: a cart has to reach this amount before checkout. It's measured on the products' total after Buy X Get Y discounts, before coupons, tax and shipping. Zero means no minimum.
- Seller minimums: on a multi-vendor store you can give a seller a higher minimum for their own products. It can't be lower than the store minimum.
- A helpful message: when a cart is short, the customer is told how far off they are and which item to add more of.
Because the minimum is measured before coupons, a coupon can bring the amount paid below it. Bear that in mind when you set both.
Price negotiation and quote requests
Signed-in customers see a Negotiate Price tab on product pages. They enter a quantity, an optional offer price and a note.
- With a price, it's an offer. Without one, it's a quote request, and the seller names the price.
- It goes back and forth. Each side can counter, accept or reject, in turn. Buyers follow their offers under My negotiations, and sellers under their own inbox.
- Limits keep it tidy. The quantity has to be at least the product's minimum, a customer can have up to 3 open offers on the same product, and an offer with no answer expires after 3 days. Sellers get a reminder email after 24 hours.
- Who answers: sellers answer offers on their own products, and admins on the store's own products. On a seller's offer, an admin can add a note or close it.
- Some products can't be negotiated: bundles, products with options such as size or colour, and members-only products.
From an accepted offer to an order
- Stock is checked when the offer is accepted.
- The buyer has 7 days to pay. They choose a delivery address and see the total: the agreed goods, shipping and tax.
- Payment goes through a payment gateway. The store minimum order value is checked again, and coupons and sale prices don't apply to an agreed price.
- The order is created once, when the payment lands. If stock ran out in between, the order is still made and flagged as oversold, so you can decide what to do.
- On a multi-vendor store, the seller is credited for the goods and shipping.
What it doesn't do
Wholesale platforms often offer more. This add-on doesn't have:
- price tiers by quantity, or automatic volume discounts;
- customer groups, trade-only prices, or approval of business accounts;
- invoices paid later on credit terms;
- a VAT or tax number field, or tax exemption.
If you need those, negotiation covers many cases: a trade customer asks once, you agree a price, and they pay it. If tax rules for business buyers apply to you, check with an accountant.
Using it well
- Set case sizes that match how you buy stock. Selling in the same multiples you receive saves splitting boxes.
- Pick a minimum order value that covers your costs. Think about packing and payment fees on a small order.
- Answer offers quickly. An offer expires after 3 days, and a trade customer who waits may buy elsewhere.
- Say what you'll negotiate on. A line on the product page, such as "Ask us about orders over 50", tells customers the tab is worth using.
Common questions
Can I set a minimum order quantity on a product?
Yes. Each product can have a minimum quantity and a case size. The first add to cart puts in the minimum, and each further click adds one case. The rules are checked again at checkout.
Can I set a minimum order value for the whole store?
Yes. A cart has to reach the store minimum before checkout. It's measured after Buy X Get Y discounts and before coupons, tax and shipping. Sellers on a multi-vendor store can be given a higher minimum.
How does price negotiation work?
Signed-in customers make an offer or ask for a quote from the product page. Buyer and seller counter, accept or reject in turn. Once accepted, the buyer has 7 days to pay the agreed price plus shipping and tax.
Does it support tiered wholesale pricing?
No. There are no automatic price tiers or customer groups. Customers who want a better price for a larger order can negotiate one.