Mary Kay - you can get all sorts of replies on a sewing desk/table but it will all come down to how much you would like to pay for it ;)
There are those of us that go to the second hand stores for stuff like that and pick up things for a fraction of the original cost and there are those that will buy only new.
You have a wide range of options.
I'm a second hand store person for some things - a sewing desk is one of those things. You can get a nice sewing table for under $25 at most of them - and most of them include a sewing machine too lol.
I got two office desk tables at second hand stores for next to nothing and I love them and wouldn't have it any other way - but if space is an issue, I'd look for a small desk (with the drawers to your left of course) or a sewing cabinet that you can put your machine in to - unless you would prefer new which would open you up to all sorts of stuff.