WoS charges about 7,000 sats fixed fee + 1% more of the amount + network fees.

For comparison Blink charges 10,000 sats fixed fee + network fees, they also mention 'For an imbalance of more than 10M sats LN/on-chain per month: additional 0.2% fees'

So far https://boltz.exchange seems to the best option with 0.5% fee + network fees, none of that fixed fee thing.

But if you are transferring large amounts where that 0.5% or 1% fees exceeds 10,000 sats, then maybe Blink could be cheaper?