Ok let me rephrase, why would a player buy into a $1k GTD for $10 when there is a $1k GTD for $1. Time? Edge? Better odds or placing?
Um because they want to play a $10 buyin instead of a $1 buyin?
It seems you're getting some confusion over what a guar. means. The guarantee (as mentioned already in this thread) is really just a 'guesstimate' of the total number of entrants that one can expect to see in that particular tournament (& it nearly always exceeds the amount).
In your question > why would someone pay $10 for a $1k gtd. when they can buyin to another $1k gtd. for $1.
Think about it. The $1 buyin mtt will have roughly 1,000 entrants with ~ 100 getting paid. (min-cashes will be ~ $1.65). I'm not sure what the final table cashes would be like but you can easily check a tourney lobby to see (I'd guess 1st might pay $160, 2nd maybe ~$115
The $10 mtt, will have ~100 entrants with Top10 getting paid. (min-cash (10th) will be ~$16,... 1sst will be ~$225, 2nd ~$160 ).
Just because the 'guaranteed' prizepool is the same, this does not equate to prize money being the same.