speaker cables under 1k for Harbeth 30.2XD?

Speaker cables price varies greatly whether you want 3 feet or 6 feet. 

I always used Duelund 12 gauge when I had 40.1’s and 40.2’s. Requires 200 hours of break in before they are listenable.  Partsconnexion in Canada is a supplier and can build them to your specs with regards to length and connectors.  Very reasonable and fast turnaround time.

I bought Morrow recently and couldn't be happier

I have 30.2XDs. I've used a few different speaker cables including Nordost and landed with Zavfino OCC cables (a Canadian company).

Their conductor cleaning and break in process is unique, and they sound great right off the bat. 

I use their Nova cables. $390US for 2.5M pair (1/2 what the Nordost cables cost me and much better). You could step up from me to the Prima MK II's and be well under budget. 

I second Zavfino recommendation above. The Prima MK2 is the sweet spot in their lineup