@Daniel Kucheruck Since you posted in Philadelphia I assume you are looking at the Philadelphia sales? 

In that time period, there were far more buyers (the blue line) looking to buy than homes for sale (the green line).

I just spent a couple of months getting ready for the Baltimore city tax sale so maybe the algorithm just picked that up, or maybe everyone is seeing more ads.To  answer your question tax sale is oversold and over promoted.

pid=2182Houston Real Estate Highlights in May, 2025: • Single-family home sales increased 6.8% year-over-year• Days on Market (DOM) for single-family homes went from 46 to 50 days• The single-family median price declined 1.2% to $339,425• The single-family average price was down 0.7% to $438,230• Single-family home months of inventory expanded to a 5.2-months supply, up from 3.9 months last May• Townhome and condominium sales declined 12.9% year-over-year.

Due on sale is a possible issue.

Purchase price: $147,000 Sale price: $178,000 https://www.zillow.com/homedetails/429-North-St-Mason-MI-48854/2075999066_zpid/?

I see many big homes available for sale with small price tags. 

This involves:Filing a written appeal form (available from your county assessor's office)Providing evidence supporting your claim that the assessment is incorrectCommon evidence includes recent comparable sales, property condition issues, or errors in property characteristicsCounty Board of EqualizationIf unsatisfied with the assessor's decision, you can appeal to the County Board of Equalization within 30 days.

He just offered to put me on the deed and give me all the proceeds of the sale.  

Top five buyer-friendly housing markets offer price cuts and increased inventoryPhoenix leads the pack with over 31% of listings showing price cuts as national housing inventory reaches a five-year highAccording to Realtor.com, these are five of the ten most "buyer-friendly" areas:Phoenix, ArizonaThe number of active listings in Phoenix posted a 23.1% year-over-year jump last month.Tampa, FloridaRoughly 29.9% of its listings in May had experienced a price cutDenver, ColoradoThe proportion of up-for-sale homes that have undergone price cuts came in at 29.4%.Austin, TexasIn May, according to the report.