The AD636 is some knockoff part.
Yes, the True RMS converter.
I'm keeping to thing about it 'cause lately the prices here in EU is raising fast... maybe due to the USD running close to EUR (today 1€ = 1.058$... while a year ago ~1.20$ and 10 years ago ~1.60$).. at the moment:
- Uni Trend UT181A (60MHz, USB adapter included, ES51997+Cortex 32bit+TFT): 270~350€
- Brymen BM869s (1MHz): 219€ (259€ with USB adapter)
- Uni Trend UT71D (400MHz, USB adapter included, ES51966+MSP430): 173€ (130€ non GS/TÜV approved)
- Brymen BM867s (1MHz, no temperature): 159€ (219€ with USB adapter)
- Amprobe AM-550 (60MHz, 6000 count, no PC connection): 158€
- CEM DT 9939 (100MHz, USB adapter included, slow display, ES51966+ATMEGA32): 155€
- Brymen BM829s (1MHz): 150€ (190€ with USB adapter)
- Uni Trend UT71C (400MHz, USB adapter included, ES51966+MSP430): 148€
- Uni Trend UT61E (220MHz, USB adapter included, no temperature, ES51922): 87€
- Uni Trend UT139C (10MHz, no PC connection, DTM0660): 40€