Advantage-wise, it's almost the same as a 1:1 trade, but if possible, I'd like to use it on monsters that consume 2 or more creatures, and use it on monsters that consume 2 or more bodies to get an explosive ad
The convenience afforded by using USPS will work for most shippers of sports cards that are not concerned with small differences in price as a trade off for the convenience of quick shipping and handling
Also, "Trap Hole" Trap Cards cannot be activated when a monster is Summoned, except "Dark Trap Hole"
Its a bit restrictive in setting and card design possibilities, but the gameplay is nice
But on the Christmas season, it's fun to just spend time with your friends who also play the game and goof around
But do note that this also stops you from using a Mirrorjade on field as a material for the Summon of another