Just make sure you don't lose the receipt. Since most receipts are in email these days, that shouldn't be an issue, but you should know.
I bought a 64 meg SIMM from them for $600 in the mid '90s back when people insisted SIMMs that big didn't exist. It had a lifetime warranty. Around a decade ago it started having issues, so I contacted them, but they said they had no way to look up my order, so I was SOL. A year or so later, I found the paper receipt, but couldn't find the SIMM. A year or so later, I found the SIMM again, got it together with the receipt, then contacted them. They replaced it
Other World Computing (macsales.com) just looks up the order. They have a lifetime warranty, too, and their 16 meg 30 pin SIMMs are, I think, $12 instead of $15.