Prices will come down as the technology is perfected, though I suspect /LRHW/CPS is going to always exist in very small numbers for very high priority targets. I doubt the DF-17 is significantly less expensive. The HACM program is IMO where the US will will make a big break through in cost effective hypersonics.
Would expect the DF-17 to be an order of magnitude less expensive as its Chinese
Possible affordable options
1) Based on cost of the the Army PrSM ballistic missile, >500 km, in FY2023 budget 120 for $213.2 million, ~ $1.8 million each
(PrSM Spiral 1 will add new seeker to track moving targets; PrSM Spiral 2 will add enhanced lethality; PrSM Spiral 3 will add extended range, 700/800 km)
2) Hypersonic SRAM missile
The LRHW production cost estimate excluding development $2.5 Bn for 18, assuming post 2025 manage to bring cost down to $100 million each missile including new seeker for movable targets, consider that unaffordable for targeting such a small number of high priority targets in such a big country as China and would expect to have little effect. Based on PrSM the costs of ballistic missile with similar range ~$5 million?, SRAM hypersonic similar? Think 1 or 2 much the better choice than the LRHW boost glide as “Quantity has a quality all its own"
PS Has the LRHW glide vehicle been successfully tested as yet?, at moment currently remain skeptical after the failures of the other boost glide missile, the Air Force ARRW, but remain anti LRHW and CPS due to their massive costs.