Neat online retailers..

[Bsalem05]

TruAqua.com Is an awesome site.. I believe they make their own products..
I own 2 of their Nano Aquarium Digital Heater with LED D1HT 25W Heaters and so far I'm very pleased with them.

They also have some cool Tanks and accessories..

Anyone else have any fav online retailers to check out??

[Myates]

Pet World - very cheap.. dollars off what you would find in stores (betta hammocks? Less than $2 here! lol).. real fast shipping as well. Good quality items, love it!

KensFish is also great for items - cheap heaters!

[deso]

These are for those of you in the UK and EU. All post internationally but this could get expensive for USA/Canada people when you take into account currency conversion plus P&P:

Aquascape France - http://www.aquascape-boutique.fr/
Great selection of tanks, accessories, equipment and such. Small but solid plant selection as well. Very helpful and friendly bilingual English-French customer service department.

TA-Aquaculture - http://www.ta-aquaculture.co.uk/
Amazing variety of high-quality foods and hard-to-find supplies. They also stock Indian Almond Leaves and Alder cones. This is my go-to place for NLS pellets (I believe they're the only importer for the brand within the UK/EU), which are impossible to find where I live. Fast delivery and great customer service.

The Green Machine - http://www.thegreenmachineonline.com/
Possibly the best catalogue of high-end aquarium products (tanks, decorations, etc.) that I've ever seen online. Very interesting blog, too. They've got a massive plant selection here.