Since I am not going to be spending real money on this, it is quite a bit of an uphill struggle for me. The players I meet flash impressive arrays of expensive cards and I try to hold my ground with mostly common cards. I win some and I lose some. Rating 220 at the moment (I believe 300 is the maximum).
Gradually my array of cards is building up, and I can actually begin experimenting with various sets without first needing to grind my way to the cards.