Yup. This is called skimming.
You initially set the price high but based on assessment that this price will be enough to offset the lower sales unit count. i.e. £10 x50 sold is better than £5x 60 sold.
Rather than just leaving it static you then look at historical trend from previous weeks/months to see the point of loss of demand then slide the price down to attract players that were less willing to buy. This is to ensure maximum peak return.
The reason why you want to avoid going to low initially, you can’t just suddenly increase without backlash and cause customer negativity. You can increase if just small amount if you have assessed that the negative response would be too negligible that it would impact sales. i.e. £10 to £11. But going up is much harder than going down in maintaining good relations.
They have worked out around £10 is sweet spot for a set. But hey left it static pricing generally, which implies demand is so strong, no need to reduce.