Hmm, that purchase price doesn't seem to work out well. Any possibility you might've forgotten the price?
I think the thing you're confused about is the term "increasing phase". Under the table, it describes "Increasing Phase 1" as "Random between 90% and 140% of your base price"
Using your stated base price (105), the range of values you should expect for this first Increasing Phase 1 should be 95-147. This will cover Mon (am) to Tues (pm). Your 2 Wednesday prices are where this gets funky. 90 is outside the range for the increase phase, but also doesn't seem like it is the start of a decrease phase either.
No I know it was over 100 because my friends had lower prices and theirs were 90 and 93 and I didn't buy cuz mine was high. I also know that the first day was an increase because it was higher than what I bought for, cuz I regretted not selling.
To me it doesn't really make sense that an "increasing phase" is only defined by whether it's higher than the base, rather than the trend. Because Small Spike and Large Spike are always such that each consecutive half day is higher than the previous. As in, it has 3 or 4 consecutive increases defining the increasing phase.
In any case, like you observed, regardless of how you interpret it, it doesn't match up with the doc.