Crossword Genius

It's expensive and going up all the time (5)


I believe the answer is:


I'm a little stuck... Click here to teach me more about this clue!

'it's expensive' is the definition.
(I've seen this before)

'going up all the time' is the wordplay.
I cannot quite understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found within the answer.
The remaining letters 'seep' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'and' acts as a link.

Can you help me to learn more?

(Other definitions for steep that I've seen before include "Vertiginous; excessive" , "Rapidly rising" , "over the top" , "Having a sharp incline" , "Saturate; precipitous" .)

I've seen this clue in The Globe and Mail.
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