How to re-sort a sorted query?

I have a query that need to be sorted in order of price of store's product with unique store number.

Here is a sample data of storeproduct table:

ItemSku , StoreNumber , Price
==========================
10001 , 7 , 30.00
10001 , 7 , 35.00 <-- duplicate store number
10001 , 5 , 45.00
10001 , 2 , 50.00

Then I do this query to get unique store number and also the cheapest price from each store:

SQL= "Select distinct on (storenumber), itemsku, storenumber,price
from storeproduct where itemsku='10001'
order by storenumber, price"

Result #1:
ItemSku , StoreNumber , Price
10001 , 2 , 50.00
10001 , 5 , 45.00
10001 , 7 , 30.00

The question is how to make the query that returns as above but sorted by price?

Thanks..
Yudie