Seems Ebay is going to limit sales to only $100 value a month (or 25 coupons whichever limit is reached first) Also they will no longer allow FREE or B1G1 Free coupons to be listed.
Here is the text of the email that some received,
We're writing to let you know that as of today, updates to eBay's manufacturer's coupon policy take effect and may impact your listings:
Sellers can only sell up to a maximum of $100 value in coupons or 25 valid, unexpired, original coupons per month, whichever limit is reached first. (The 25 coupons limit includes multiple coupons purchased from a multi-quantity listing.)
Coupons for "free" products-including coupons where the coupon holder buys some quantity of items at one price and gets some number of items for free, for example, "buy-get-one-free" offers, or offers for free shipping-may no longer be sold on eBay.
Starting September 1, 2013, listings for these coupons that don't comply with these policy changes will be removed. After September 1, listings in violation of this policy may be subject to a range of other actions, including restrictions of buying and selling privileges and a suspension of your account.
Please be sure to review all the terms of the updated policy now and review the terms printed on the coupon carefully before you list it to ensure compliance.
As always, thank you for selling on eBay!
eBay Selling Team
(Thank you, Mr C)