I have put the BoostButton SMEC and SBEC flash modules up in the catalog for ordering. Previously, I had only offered them pre-installed into computers. Only because the install is a bit more tricky than a relatively simple socket+chip. But, these are now available for the brave DIY types.
I linked to the exsisting MerkurBoys wiki on the SMEC install and I'm working on updating that and making an install procedure for the SBEC's. I also have SBECII-specific flash modules in the works.
The SMEC flash module install procedure is here, until I can get it put into a PDF with my own pictures...