There are over-the-knee boots under 1,000. at Net-a-Porter.com, link here. The buyers simply pick the best styles from the best designers; there are many more in the over 1,000. and even over 2,000. range. These are deliciously good quality and design. And in order shown:
See by Chloe over-the-knee studded suede boots $645.00
See by Chloe wrap-around leather over-the-knee boots $795.00
Belle by Sigerson Morrison thigh-high stretch suede boots $595.00
DKNY Gwen fold-over leather boots $475.00
Stella McCartney shearling-lined thigh boots $625.00
Love flat over-the-knee boots always and the See by Chloe wrap-around leather ones could become my favorite. Stella's are faux suede, of course.