There is a number of US only deals listed at Dear Author. To minimize the overlap, I have decided to focus on the ones that is available internationally at Allromanceebooks. It will be a mix of publisher deals, and bestselling authors going indie. The price level I have decided is 4.99. Why? Mainly because above that it starts to stray into ordinary pricing.
Never a bride by Amelia Grey and The Mistress House by Leigh Michaels is available for free at ARe, Kobo, and Amazon.
Kensington offers What a Gentleman wants by Caroline Linden for 3.99 and the sequels for 4.79 each. I read What a Gentleman wants last week and I recommend it.
To tempt a Scotman by Victoria Dahl is available for 3.19, also from Kensington.
So, the selfpublished books.
Caroline Jewel offers 3 selfpublished books at ARe, as do Colleen Gleason. Don't forget to check out Courtney Milan's Unlocked, also at ARe.
Disclaimer: This is just a fraction of the bargains available. Also, I suspect they are available at Amazon and BN as well.