Mary...

If recollection serves me correctly is was 48 page 4-color. The general rule of thumb is a blind mailing will return from 1 to 3%. A mailing to an actual customer list returns are much higher. We used to drop a certain number each months for about 3 months to avoid being overwhelmed with orders. Our mailing list was about 56,000 active. We'd print 100k which would cover our requests for catalogs from prospective customers.

As a side-bar. We made about $7k to $8k a month renting our list. It was a very specific, very current list to a high end clientele.

No I don't currently produce a catalog.
Hope this helps.