I've been buying from WSP for six years, and I've never had an issue. I love the choices of products, free shipping, and recipes.
This is the site that helped me get started as a soaper, and while I've found some other sources for some products, I like having a one stop shop if I'm running low on anything.
I've never had any customer service issues and their oils and butters have held up and I've never had one go rancid on me.
I'm a happy camper, 0 complaints.