Even if you don't need a merch store today, you may want one in the future, so it makes sense to get grandfathered in to the current free tier. There's no cost to set one up. *Also this is not an ad, but the invite link is an affiliate link with the bonus sample credit.
What's your experience with their quality? Are the mugs a decent size? Been looking for a merch store for our podcast, but providers vary so widely
There are several mug types and sizes (11oz and 15oz). Quality has always been really good from everything I've ordered from others shops, and my own. Half my clothes are from there now. FW offers a TON of flexibility for pricing, shipping, promotions, deals, upgrades, etc. It's really solid.
Chiming in on this as I also use FW. Haven't had any issues and I love every piece I've purchased, as does my community! The colors are much brighter and better quality than I anticipated. We've been very pleased!