Windows 7 + Office 2007

I'd like to merge 15 pst files into one large pst file. 14 are between 70,000kb and 120,000kb with the last being the largest, the one I'm currently using--at 210,000kb. So we're not talking a huge final file once dupes and deleted entries are removed.

I just tried the PST Merge (crippled) demo. The experience was problematic. I'm not rushing out the door to buy the thing.

Is there not either a free util that will handle the task or a competitor to the above?

Thanks,

Mark