This could be a plausible price nowadays.
Bear in mind that some of us, loyal users, in the past have bought several times that price, which had been the regular yearly upgrade price since the early SonyCreative days, and also at Magix’s time.
Of course there were pre-launch offers, upgrade paths and occasional sales, as there always were differentiated customers and timings to acquire SL. However at 7th version there is a trail already walked.
At 2020 there are other relevant players at the Spectral edition field. Reaper DAW has incorporated an spectral editor and they are an important player. IZotope has been developing their AI and workflow technologies and last year the RX line skipped its anual update so it is bound to happen this year. Also one of the early pioneers Photosounder by Michel Rouzic
https://photosounder.com/ has only recently completed a complete -years worth- rework of its custom software framework. Updates and novelties are just around the corner.
///A welcome to newcomers coming aboard, hoping their time invested in price search and the different offers available to get in, ultimately support the development work already invested, much the same way that old customers have been supporting it, some of us several times over.
Thus allowing for scaled differentiated support (cost) according to loyalty, while also facilitating dedicated offers to specific customers and channels (crossgrades, timed sales, etc), the way that Steinberg have been doing with Cubase and Spectralayers 6, seems like the way to go.