Hi, I was quite surprised to discover that probably the cheapest possible GoodRam card (M1AA 16GB) works with sdmon. I also have the 64GB version, and it doesn't work.
Goodram M1A0/M1AA Microcard
Here's a sample:

{
"version": "v0.9.0 (4dff9b6) armv6",
"date": "2025-03-19T17:31:15.000",
"device":"/dev/mmcblk0",
"addTime": "false",
"read_via_cmd56_arg_1":"read successful but signature 0xff 0xff",
"idata.response[]":"0x900 0x00 0x00 0x00",
"flashId": ["0x98","0x3a","0x98","0xb3","0x76","0x72","0x08","0x0e","0x00"],
"icVersion": ["0x20","0x25"],
"fwVersion": [29,23],
"ceNumber": "0x01",
"spareBlockCount": 9,
"initialBadBlockCount": 4,
"goodBlockRatePercent": 99.73,
"totalEraseCount": 2402,
"enduranceRemainLifePercent": 99.90,
"avgEraseCount": 3,
"minEraseCount": 1,
"maxEraseCount": 4,
"powerUpCount": 38,
"abnormalPowerOffCount": 4,
"totalRefreshCount": 0,
"productMarker": ["0x00","0x00","0x00","0x00","0x00","0x00","0x00","0x00"],
"laterBadBlockCount": 0,
"success":true
}