What are the best free NFT marketplace aggregator sites for comparing prices before buying?

Here are some of the best free NFT marketplace aggregators for comparing prices before buying:

1. NFTGo

• Good for: Price comparison, market analytics, collection tracking
• Features: Floor price data across marketplaces, rarity, sales history, wallet insights
• Why use it: One of the strongest all-around NFT data/aggregator tools

2. Gem by OpenSea

• Good for: Aggregating listings across multiple NFT marketplaces
• Features: Bulk buying, sweeping floors, trait filters, real-time collection listings
• Why use it: Very popular for finding the lowest listings quickly

3. Blur

• Good for: Fast trading and live price discovery
• Features: Aggregated listings, bidding, sniping tools, portfolio analytics
• Why use it: Especially strong for Ethereum NFT traders comparing market depth

4. LooksRare

• Good for: Price comparison and collection browsing
• Features: Aggregated listings, rewards, collection stats
• Why use it: Sometimes shows better deals or liquidity on certain collections

5. Rarity.tools

• Good for: Comparing rarity and checking collection stats before buying
• Features: Trait rarity ranking, marketplace links, market data
• Why use it: Best when price depends heavily on rarity

6. Trait Sniper

• Good for: Trait-based deal hunting
• Features: Collection filters, rarity sorting, marketplace links
• Why use it: Useful for spotting underpriced NFTs by traits

7. NFTScan

• Good for: Cross-market NFT data and collection analytics
• Features: Sales history, holdings, collection info, market trends
• Why use it: Good reference tool for deeper comparison before purchase

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Best picks by use case

• Best overall aggregator: NFTGo
• Best for bulk sweeping and live listings: Gem
• Best for active trading on Ethereum: Blur
• Best for rarity-based buying: Rarity.tools

If you want, I can also give you:

1. a ranked list for Ethereum vs Solana vs Polygon, or
2. a table comparing fees, supported chains, and features.