What is the cheapest way to upgrade a naked Kryocera Tasfalka 180 to a print server?

Question

Printers

Actually, there is the above model without expansion cards (ie, stupid copier). Not even a USB board.
I would like to improve it to a network printer with minimal cash costs.
There are two points:
1) a USB-out board is sold for about 12500, but the print server for this model is no longer available.
2) budget money (and there are not enough of them,) you won’t be able to buy anything (such as buying a “raspberry” and plugging it in via usb will be problematic). You need something hassle-free and inexpensive that you can buy in stores officially.
Options?
UPD: there is no usb port. You can buy a board (most likely you will have to).