well, just in case there is a "new potential customer" here looking around, I'll kick in my 2 cents,
1) BIAB is an amazing program and you will almost certainly be thrilled with the results you get (even with the copy-protection they added in 2014)
2) Kevin is absolutely correct to point out that software copy protection punishes legit users! at best it is a nuisance and at worst it can completely prevent you from using something you paid real money for!