[wfubob]

I recently started building '05 Topps Chrome and '08 Heritage with my sons for their birth years. Did so by buying a couple or 3 hobby boxes off the interwebz, then trading lots of duplicates with other collectors online. Must say that pulling the inserts is great fun (especially for my boys). Pulled a couple very nice autos, and sold them to pay for the boxes, basically.

We've had so much fun that we're building '12 Heritage and '12 Bowman now, the same way (with a few blaster boxes from Walmart/Target thrown in too). If you pull a few nice inserts and don't care about saving them (we don't, just building the "Base Master Sets"), you can get pretty close to the sets paying for themselves and having all the box rip fun for free.