I was in the same boat as you a couple months ago. I was nervous and wanted to get the best score possible. Getting a good score was way more important than the money for me. I bought the upgraded account and honestly, I was super disappointed. The first thing I noticed was that PAT booster is THE EXACT SAME as bootcamp for Angle ranking, hole punching, pattern folding, and cube counting. What I found the difference to be is that keyhole and TFE are a lot harder than DAT bootcamps. Like unnecessarily stupid hard, and let me tell you. THERE ARE OBVIOUS MISTAKES in the practice tests *and* their generators have lots of mistakes as well. I was pretty fed up with PAT booster so I contacted them asking for a refund because IMO it was not even worth the $80 or something that I paid for it and the girl avoided my question and gave me a lot of explanations for the mistakes. Sadly I never got my refund.
I took PAT booster practice test #6 last week in prep for the DAT. I did the last four sections first then went to KH and TFE. I remember thinking that there was no possible way the actual DAT was going to ask questions so ridiculously specific. I never really struggled on bootcamps KH but I think I got 3/15 on that PAT booster section.
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If anything, PAT booster just made me more paranoid about the tiny differences in KH and TFE. IT IS NOT WORTH IT. I don't think Bootcamp's PAT prep gets enough credit here on SDN. I've heard a lot of people be dramatic and say stuff like "OMG bootcamp is so outdated blah blah blah." Let me ask you something. HOW MUCH CAN THE PAT CHANGE? seriously! I know the cube thing changed but what else? Don't let those people scare you. Bootcamp prepared me well. I personally felt like my DAT had a PAT difficulty of around 6 and bootcamp was about a 7. PAT booster was like a 9 or 10.... or 11..... If I were you, I'd keep my money, focus on bootcamp, do their generators *that actually work* and you'll be fine.
---SOURCE --- I took my DAT 2 days ago and got 25AA and 26 PAT
Also, if anyone from PAT/DAT booster reads this, There's a mistake on your Biology practice test #1. Peristalsis occurs in the urinary system, as well as the stomach.......and I still want a refund lol.
Good luck on your DAT.