Long Hard Ride by Lorelei James ( free on BN and Amazon) are a Samhain freebie. Just like A Little Harmless Sex by Melissa Schroeder ( free on BN and Amazon)
Carina Press are offering the first book in a number of series for the bargain price of 0.99 during May( Including Cindy Spencer Pape's amazing Steam and Sorcery), more info here. I definitely plan to buy some! :)
Kobo offers the coupon code spring20off which gives a 2 dollar discount. The coupon works on non-agency books if you are in North america and UK, and on all books if you live in non-english speaking countries. The coupon expires 5/31.
Dorchester offers Dark Legacy by Anna DiStefano as a free read between, May 2nd - May 9th, on Amazon, Barnes and Noble, Borders, etc. The rest of May it will be able for 0.99
All romance ebooks offers a 50% e-buck rebate on all Ellora's Cave titles.