I'm still buying 6 - 10 digits but never stopped, paying so little that the 4 digit sell off was irrelevant to buying
Only buying:
1 - ABBBBBA, ABBBA, ABCDCBA, ABCCCBA type palindrome patterns
2 - AAABBB, AAABBBB, AAAAABB, AAAABBBB type patterns
3 - 6 digit 111..999 +ABC etc