I'm looking for Hobbyking 30A Blue Series ESCs 4Nos. Pls PM/Reply if anyone has them for sale.

Well dear if you have a few days with you... buy it directly from Hobbyking.... pay through Paypal and get it shipped by the cheapest shipping with tracking number i.e. surface post.  It will cost you some $ 5-8 for shipping and will reach you in 10-20 days.  Will work out cheaper and you will for sure get a brand new stuff.

I buy my items from HK mostly in this manner

I have the same flashed with Simon K firmware, works fine with my quad with NTM 2826 1200kv motor let me know if you are interested