Is it okay to get clay credits from resellers?

It's not recommended to purchase Clay credits from resellers. We don't have any official resellers for Clay credits. The safest and most cost-effective way to get additional credits is through our official channels. If you're on a free plan, you can't buy additional credits directly. The best option is to upgrade to a paid plan, like our Starter plan. For users on paid plans, we offer "credit top-ups" which allow you to buy extra credits on top of your existing plan. These top-ups cost 50% more than the typical cost per credit of your current plan. If you need more information about our pricing and plans, you can check our Plans & Billing Guide or Clay Pricing page on our website.

Source: FAQ | Clay.com