If they did, it hasn't been done officially, since I tend to keep an eye out for that.
The smallest is seven tonnes, thirty percent deflation at one hundred fifty percent default cost.
Pragmatically, you'll want the technological level fourteen one, since you could jump your hundred tonne mini yacht two parsecs, which seems the only reason to pay over the odds to save three tonnes.
That's the only exception to the minimum ten tonnes for any jump drive.