I have a pair of Xiaomi Hybrid Dual Drivers in-ear headphones. When I'm walking about, I can hear my foot-steps quite loudly through the phones, making them not really usable for walking about. Since these aren't really something we can try before we buy, is this standard for IEM?
On the back of that, are there any other better ones out there for under $100 clams?
Yea it is pretty common, through bone conduction. Use your just your fingers to plug your ears and you will get the same result.
These are my fav: https://www.ebay.com/itm/Sony-MDR-XB90EX-Earphone-Headphone-…
They dont make them anymore though so prices going up