Parts with some horses for about lb50 (5)
I believe the answer is:
sells
'lb50' is the definition.
I can't tell whether this definition defines the answer.
'parts with some horses for' is the wordplay.
'parts' becomes 'ells' (ell is a kind of part).
'with' means one lot of letters go next to another.
'some horses for' becomes 's' (I can't justify this - if you can you should give a lot more credence to this answer).
'ells' after 's' is 'SELLS'.
'about' is the link.
Can you help me to learn more?
(Other definitions for sells that I've seen before include "Retails" , "Markets" , "Flogs" , "Vends" , "Exchanges for payment" .)