HP loader rom chips

[Jay West]

Jameco claims to have real Signetics 82S129's in (not substituted parts). 
These are for the HP 21MX loader roms.

They are quoting me $9.95 each for qty 1-10.

Anyone know of a better source, or want to go in with me on this? I will 
probably get about 10.

Equivalent parts (that my 29B can program):
Monolithic Memories 6301
Harris 7611
Texas Instruments 24S10
Applied Micro Devices 27S21

So maybe someone knows of a source for the above parts that is cheaper.

Jay