Digital Goods Limit is unreasonably small

I publish a few games for the PC and a catalog of over 100 classic audiobook titles. With very few exceptions (less than 5) all are above 100 MB ... a limit above 500 MB is far more realistic.  My largest game file is in the order of 350MB and it cannot be split, it is digitally signed and compressed.  Even though my audiobook files are in mp3 format, the readings are unabridged and many titles are above 400MB.

While I sell the recordings on CD, Thumbdrive or DVD many customers would prefer a download version.

Regards,

Richard