Only in its first week of sales up to this point, Tony Hawk's Pro Skater HD has already sold a total of 120,000 downloads. Apparently, its day-to-day sales have also managed to stay consistent since last Wednesday. It's worth noting that these sales are only for the Xbox Live Arcade version, as the PSN and PC releases have not launched yet. Pretty good for an HD remake of a fourteen year old game that we found to not particularly live up to the original games.
Personally, I found the remake to be insanely frustrating at times, and full of small, annoying bugs that did hinder the experience a bit. Despite that, I would say I enjoyed my time with Tony Hawk HD, especially since it's not a full retail release. It's absolutely worth it for the nostalgia alone, and it appears 120,000 other people would agree with that.