I just tried to order the complete refill kit at TFTestkits.net. For my $38 order the cheapest shipping option was $18! Does anyone know what's going on there? That kind of removes any financial advantage to ordering test reagent refills there. Since this is the last day for the sale (I think), it looks like I'll miss out this year (and maybe forever). It's probably cheaper to buy the Taylor refills from Amazon at those rates.