@Avi There are two types of prices - SELL (BID) & BUY (ASK).
When you have a BUY position, you have to look at the SELL price, because that’s what you can sell your shares for. However, when you have a SELL position, then the BUY price becomes relevant because you need to purchase back the share.
There is always a difference between the BUY & SELL price called the spread.
You can check this post to learn how short selling works & why you have to look at the BUY price, not chart price (which is SELL).