Intro: Just click the button for the discs you want. Then click the View Cart link above for the total & to select shipping. Then

Confirmation: After I get your disks burned, you will receive an email with a delivery confirmation tracking number if shipped by Priority Mail within the U.S.

Quality: I check files with current versions of rom management tools - clrmame pro,  Good Tools, & TIM to verify they are all correct. I use only 1st class media (discs) according to digitalfaq. Everything is packaged carefully in bubble wrap or a bubble envelope to prevent damage during shipping. Sets come in paper sleeves with the disc name/number written on them.

Set Types: I collect three types of sets. Each have their merit, but they all have some different sets that are not in the other. That's why I collect them all :-)
"Good" - A comprehensive collection with multiple copies for each language, including hacks, overdumps, alternates, etc. These sets are not usually updated as often as the others.
"TOSEC" - The largest group of sets managed by a large group of people. All dumps are verified. Updated semi-frequently.
"No-Intro" - Sets include only one of each language & no beta, hacked, over-dumped, trained or "advertising intro" versions. Many of these sets are updated frequently.