Also founder of Two Tap here. Just to clarify on the above:
1. Pricing and inventory are realtime with Two Tap -- taken live from the merchant site when a shopping session is started. If only a size S is available on the merchant site then that's what we make available for shoppers in our carts. Merchants don't have to do any integration or manage this process.
2. Reliability has been a non problem for a while, we have a guarantee that we don't lose orders. And the process to confirm orders is async like Amazon -- step 1: we've received your order; step 2: your order is confirmed.
3. Two Tap supports over 1000 retailer integrations.
1. Pricing and inventory are realtime with Two Tap -- taken live from the merchant site when a shopping session is started. If only a size S is available on the merchant site then that's what we make available for shoppers in our carts. Merchants don't have to do any integration or manage this process.
2. Reliability has been a non problem for a while, we have a guarantee that we don't lose orders. And the process to confirm orders is async like Amazon -- step 1: we've received your order; step 2: your order is confirmed.
3. Two Tap supports over 1000 retailer integrations.
Thanks for looking into the space!