I have 2 of my new El-CheapO Carts available, flashed with LSDJ 4.7.3. These carts are not re-flashable without hardware modification so they should be purchased as a dedicated LSDJ cart only.
128kbytes of SRAM enables full Load/Save functionality. The Save can be dumped and written with existing dumpers, or my Linker cable (I'll need to flash a different version of LSDJ if you want to use the linker with it)
The usual proof of LSDJ will be required before I ship, and you are welcome to send me your personal patched LSDJ for flashing.
US$10 ea, shipping extra (economy will only be $3-4 for most countries)
I have a couple more available, I intend to enable re-flashing on the others via my Joey (Software version 3.11) and sell them as blank flash carts.