picked up a bargain here last week
http://stores.ebay.co.uk/ParamoSeconds/Legwear-/_i.html?_fsub=2032903015&_sid=1010329155&_trksid=p4634.c0.m322
as for your ‘poor circulation’ i had a slightly different problem (trapped nerve), though at first i put it down to poor circulation so when out on the bike i endeavoured to walk much more (not too difficult given my chronic asthma)
so out went spd’s etc to be replaced with
regular walking boots (with the waterproof layer…event works grrreat!)
removable pedals so that you’re not knocking your shins into mush;
http://www.ebay.co.uk/itm/wellgo-C-128-quick-release-pedal-RED-/270994403871?pt=UK_sportsleisure_cycling_bikeparts_SR&hash=item3f1886721f
it takes a few times to get the knack of putting the pedals back on the crank but they’re bombproof…and find a safe place to stash the pedal when you’re pushing the bike :oops:…nearly lost one at a most inconvenient time.
oh, and drinking pure orange juice seems to improve my overall circulation.
hope this helps