Common oopbuy coupons mistakes to avoid

Hey everyone, I've been using oopbuy for about 15 months now and wanted to share my experience with their coupons feature. I started off completely clueless about how things work, but after some trial and error, I figured out the process. For anyone new, here's what I learned: First, make sure you understand the shipping calculations before placing orders. I made the mistake of not checking this and ended up paying more than expected. The coupons aspect is actually quite useful once you get the hang of it. I've ordered 16 items so far, and only had 0 issue that customer service helped resolve within 2 days. If anyone has questions, feel free to ask. I'm happy to help fellow shoppers avoid the mistakes I made.