AG-Guys.com is the best place for it, unless you want human grade then you can just google an online pharmacy that ships out of India some of them generics and cross your fingers it makes it through customs.
I've used it numerous times in my PCT with bloods to prove it's good to go, just gotta be accurate with your dosing. For the price also I think ag-guys is very legit
Hipocampus has pharma grade clomid for a steal of a price right now bro. Check it out. I got some from him and it's g2g. But yes, ag-guys is g2g and so is the liquid clomid from sarms1. Any of these are safe bets. There are plenty of reliable sources.