- Sold between 10 000 and 50 000 dollars
- Has been a member for 3-4 years
- Author was Featured
- Item was Featured
- Interviewed on the Envato Notes blog
- Was featured in a podcast
- Author had a File in an Envato Bundle
- Author had a Free File of the Month
- Exclusive Author
I uploaded only wav file most of the time, and if i had to buy a track, i would always go for wav and convert to the needed mp3 bitrate etc. . Mp3 files are not equal mp3 files, it depends on what software has been used to convert it. I can hear big differences especialy regarding the volume of the converted mp3 file from different converters. Be it iTunes or Logic etc. using the same wav source file.
But you are right, delivering also a mp3 file for the customer to put it quick on a mp3 player is for sure not wrong 
SO : I will try to upload both in the future 
Definitely both. The extra time it takes to prepare is well worth it. Bang for your buck is what makes marketplaces such as this roll.
All the best!
