Bloke smuggling in ecstasy at low price (5)
I believe the answer is:
cheap
'at low price' is the definition.
(cheap means sold at a low price)
'bloke smuggling in ecstasy' is the wordplay.
'bloke' becomes 'chap' (both can mean a man).
'smuggling in' is an insertion indicator.
'ecstasy' becomes 'E' (informal term for the drug).
'chap' going around 'e' is 'CHEAP'.
(Other definitions for cheap that I've seen before include "bargain" , "Low in price or tastelessly showy" , "Base" , "Contemptible" , "Tawdry - inexpensive" .)