Hasbro, Wizards of the Coast's owners, are slowly reissuing much of the rpg tie-in fiction "back-list" and making good the ravages made into the catalogue over the "interesting times" seen over the past few years - the damage done to it by themselves, and WotC before them, once they'd bought the wreck of TSR, but not those set in the Alternity StarDrive Setting (nor those set in the Birthright, Darkspace, Greyhawk, Ravenloft and Spelljammer worlds).
The Alternity/StarDrive novels are therefore liable to become increasingly difficult to find, as time goes on.
I list here both what I have in stock, and what I may be able to find second-hand; n.b. all of these books are now out of print. If a title you are hunting is not listed as in stock here, i may still be able to find a copy of it for you: e-mail me at v$imt$v at my sub-domain, i-m-t.demon.co.uk to ask.
Please use the same e-mail address to enquire about postage costs, and to order.
(e-address spelled out to reduce/avoid unfriendly e-address harvesting)

• On the Verge by Roland Green TSR 1st edn December 1998 p/b ukL 5.99
• Starfall edited by Martin H. Greenberg TSR 1st edn April 1999 p/b (out of stock)
• Zero Point by Richard Baker TSR 1st edn June 1999 p/b (out of stock)
• The Silence Between the Stars by Denise Vitola TSR 1st edn August 1999 p/b (out of stock)

• #1: Starrise at Corrivale TSR 1st edn October 1998 p/b (out of stock)
• #2: Storm at Eldala TSR 1st edn March 1999 p/b (out of stock)
• #3: Nightfall at Algemron TSR 1st edn October 1999 p/b (out of stock)