Right now, the Tichy CDLX 10K tanker is at HobbyLinc for under $4.
Not sure if it's an abbreviated kit (without truckframes and decals).
They also have 10-packs at a discount.
All that being said, although Tichy kits render very nice models, they do require a higher level of skill than Accurail kits, plus decal application.
BTW, Accurail kits can be found on some LHS shelves for $7 or $8. But as you've discovered, they don't offer tankers.