I won a hunt with Table Mountain Outfitters near Casper last year, and would recommend them. Great environment at camp and they got me on antelope quickly. Cannot say enough good about them.
That being said, I am planning to go back to WY this year and hunt DIY and bring my family along. Nothing against Table Mountain, but as stated the antelope are EVERYWHERE. I tried to explain it and I found this best sums it up; imagine every time you saw a blue car it was a herd of antelope. There are that many of them out there. If you purchase OnX Maps and can spend a few days there you will tag out. I researched which areas have public access, can be drawn with 1 point, and their harvest rates and selected a unit to hunt this year on toprut.
I would definitely recommend saving the money, it is scary to go out without any knowledge and hope to be successful but with WY antelope it can be done.