is discountmugs.com trustworthy website?

[Iker]

has anybody worked with them and know how they are?

[Jake]

I can just tell you the site is 11 years old, looks like they renewed the name 10 years in advance, which is not a commitment some fly by night would not make, they are using a relatively serious business web host, the Google page rank 4 suggests a number of other sites are recommending it, all this technical stuff suggests it's a serious business.

It looks like a fairly common Promotional Gifts site, many more can be turned up with a web search.