Hi CHMOD
I have also been in the business for 10 years and have dealt with millions and millions of surfers as the webmaster of insite adult for five of those years.
RE: "The gallery maybe sucks but it brings me sales and, at the end, that's the important thing."
I offer this as help and not criticism. I would suggest that you do a little more experimenting to find out how to maximize your revenue stream and not be satisfied with just making sales. You may find that putting join links between each row of thumbs might make one more sale for you, maybee even more.
My experience has shown me that putting join links on the first page, as close to the top possible, has always increased revenue. Above the fold is where the money is.
>>>Winners WIN because they NEVER GIVE UP!<<<