Product review (1 stars): GREAT IDEA! for warranty, not loss.
GREAT IDEA! if they're bubbling and cracking

By NMSunLover
Amazon Customer Reviews
<a data-hook="product-link-linked" class="a-link-normal" href="/GE-WB03K10303-Surface-Burner-Control-Knob-for-Stove/dp/B005OOZB1A/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">GE WB03K10303 Surface Burner Control Knob for Stove</a>

FYI - GE Customer Service - Metal knobs
- I called GE Customer Service at 800-386-1215. They are shipping me new knobs for $2.66 each (instead of their regular price of $39.50 each!!). The new knobs are all METAL, not plastic !!

from us 10/15/13:  we called and got all metal knobs for $5 each from GE with $5 shipping. so definitely give this route a try before spending $70. remember to remove all knobs during cleaning cycles or you'll get bubbles and cracking too which should be warranty .