Well, not only are these still on sale @ Amazon, but Ellora's Cave has actually and finally made their
"Values from the Vault" sale page for these filterable by category so you can more easily pick the themes & subgenres you're interested in.
Still no way to sort by author/title, but much better than before.
And most of the same titles there are only 99 cents and DRM-free MultiFormat, which may make it cheaper than buying at Amazon, especially for people outside the US/UK/Canada/Australia who still have to pay the extra $2 Whispernet surcharge.
Looks like they've also added a lot more titles (now @ 102 pages!); there are at least 6 more of the Roberta Gellis backlist books on sale for 99 cents each:
The English Heiress,
The Cornish Heiress,
The Kent Heiress
Fire Song,
Siren Song,
Winter Song
Just two more titles to add and they'll have the entirety of her "Heiress" and "Royal Dynasty" series on sale for less than $10 total.