I always buy in bulk, about 2 years ago i bought some smd bridge rectifiers i use for my coach lighting, i got a reel of 1500 for less than a tenner inc postage, in fact any electrical item i get in bulk, leds, transistors, diodes, one of my last purchases were some leds in 3 and 5mm of different colours, 1000 of them for less than a fiver inc postage,