Offering to pay for the lot? (7)
I believe the answer is:
bidding
'offering' is the definition.
('bid' can be a synonym of 'offer')
'pay for the lot?' is the wordplay.
I cannot quite see how this works, but
'lot?' could be 'd' and 'd' is located in the answer.
The remaining letters 'biding' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'to' acts as a link.
(Other definitions for bidding that I've seen before include "Commanding or make an offer at auction" , "Activity of bridge players" , "Offering at auction" , "(At one's) command" .)