This MPPT solar regulator seems very cheap, but is it likely to be any good?

[CLB]

http://www.ebay.co.uk/itm/261226238449?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

What does the (solar) panel think? Good value or waste of a few quid.

 

[JumbleDuck]

http://www.ebay.co.uk/itm/261226238449?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

What does the (solar) panel think? Good value or waste of a few quid.

I checked it out for a previous thread. The makers think it's a PWM controller: http://www.ueiua.com/html_products/Solar-Charge-Controller-51.html. Some creative marketing going on, I fear.