Great Practice for Great Value

I have tried several computer-adaptive tests online usually for around $20-50 and have found GMAT Club's CAT's give great value for an extensive amount of practice, especially for Quant. Although I have a good foundation in the math concepts covered by the GMAT, I could not seem to do well in sample tests due to the time pressure and how the difficult of the questions increased progressively. The amount of questions for practice available through GMAT Club gave me the confidence to spot my errors and the explanations were pretty great. Some review books may offer just one way of looking at the problem but I appreciated GMAT Club providing two ways of assessing and solving it. My only issue is that sometimes the interface is buggy and there are lags in between questions

In terms of the score analysis reports, they are one of the better ones out there for keeping track. I highly recommend subscribing to GMAT Club because you'll definitely get your money's worth.