The budget is 30 thousand yuan to buy learning equipment of Siemens 300 series PLC, which models are good?

2A power supply PS307

Order number: 6ES7307-1ba01-0aa0.

Cpu3 13C, 64k, 24di/16o, 4ai/2ao, 1pt 100, maximum. 10 16/253, 3HSC/30kHz, 2 * 40 needles.

OrderNo.: 6ES7 3 13-5BF03-0AB0

MMC card, 64K, for S7-300/C7/ET200IM151CPU, 3.3V NFLASH.

Order number: 6E7953-8LF20-0AA0

Guide rail (160mm)

Order number: 6ES7 390- 1AB60-0AA0

Program line 6ES7972-0B20-0A0

About 10000, analog, high-speed counter, everything.