Difference between $3 and $12 is so much that would be worth it to Martinez to wait until clubs offering the latter could offer it again. So, don't buy he ever that kind of offer in this murky world of int'l baseball. Just doesn't make sense.
Ben Badler/BA has written extensively about Cuban baseball, as Craig notes, about arcane signing rules, etc. So, think Badler is probably best source, with caveat that his most extensive write-up about Martinez was back in June or July and maybe Martinez has improved somewhat with training, conditioning, etc. in these circumstances, a guy his age can get better fast. Martinez' power stats are dismal, FWIW, so there is that. I take Law's report as encouraging, really glad to have Martinez here, and we'll just see what we've got when he plays here.