anagram of brat

Well, they lack the chunky heel, and I don't know your size, but they are on sale...

http://store.fetishfactory.com/index.cfm?fuseaction=Items.ShowItemDetails&itemid=97162&location=FB_1

Or maybe there is something else there that strikes your fancy.

edited to add:

Bing came up with several possible hits, such as this one:
http://www.zappos.com/n/p/p/7258261/c/50684.html

I used this search:
http://www.bing.com/search?q=suede+lace-up+chunky+heeled+knee+high+boots&go=&form=QBLH&qs=n

I'll stop here, in case the fact I'm giving shopping help for footwear starts seeming creepy (it was all an exercise in search-fu, honest!)