I'd check out azarius.net or potseeds.co.uk
If you still have one of your syringes saved, you don't need to get a new spore syringe and can just buy a print (which are usually cheaper, and also give you a whole lot more spores)... if you're thinking "but I'm a novice and that sounds more complicated", well... it's not really. I'm a bit of a novice myself and have only grown shrooms for about a year now. I started with a grow kit that had everything put together and colonized, and then I moved onto syringes, and now that I have a syringe, I just sterilize it in the pressure cooker for 30 minutes and then make my own spore syringe..
Next time you grow, remember to make a few spore prints and you'll never have to by spores again!
I just take a disposable plastic cup (since it is likely to be free from airborn contanimants and because I don't have a shot glass to sterilize) and then fill it with some distilled water, and scrape some spores off the print and into the water (with an exacto knife that I head until read a minute or two before).
Saving a syringe and making your own spore prints will mean you won't have to buy spores again.