Though dependable, one gets sold out (5)
I believe the answer is:
solid
'though dependable' is the definition.
'solid' can be an answer for 'dependable' (I've seen this in another clue). I am not certain of the 'though' bit.
'one gets sold out' is the wordplay.
'one' becomes 'i' (Roman numeral).
'gets' means one lot of letters go next to another.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'i'+'sold'='isold'
'isold' with letters rearranged gives 'SOLID'.
Can you help me to learn more?
(Other definitions for solid that I've seen before include "Firm, strong" , "Unbroken" , "Three-dimensional shape, not hollow" , "Strongly made or built" , "from one getting pushed around" .)