This might be compatible. As the pass band should be wide enough to be in the same range stil.

The new ones are actually reaaaaly fast with booting

I don’t know the full details, but part of it:

• In the store you can walk between the books. This takes loads of room. In the Amazon warehouse, this can be veeery cramped.
• The land value of the store is probably mich higher than the Amazon warehouse land.
• They sell much more, so all costs can be shared across a million orders, instead of across just 10 books sold.