Thank you all, true !

I did write to Microchip again, saying 136 € was too expensive and all I wanted was to program a 18F452 (old chip) and/or a 18F4520 (new chip).

They answer is clear :

PG164120 = 23,84 € = pickit2 programmer
AC162049 = 27,24 € = universal programming module (socket)
AC164110 = 6,81 € = RJ-11 to ICSP adapter (cable)

This makes 57,89 €.

Do you all agree it is a good price ?