The zip on my brown boots went, and they were falling apart anyway so I got a pair of black boots, went back to the shop and got a pair of black chaps same make, this was about a year ago, so would imagine they still stock them, they were about £35-40, and are very good quality and do polish up nicely. However I don't ride much so can't vouch for longevity though they seem quite well made/good quality leather/well stitched.
I got ariat concord for 35 pounds on equestrian clearance, they look smart on the outside and have suede inner for extra grip, very pleased and the range of sizes is great as I have longish shins!
Al has Treadstone brown gaiters, she found them for £15 on eBay and they fit her perfectly, last and are smart enough for competitions. They look like very nice boots from a distance!