Crossword Puzzle Swaps again

Clue: Swaps again

Swaps for a better model (TRADESUP with 8 letters)
Prefix meaning Â“againstÂ” (ANTI with 4 letters)
Swaps goods (BARTERS with 7 letters)
But when subprimes and credit default swaps come along, he ___ ... (TAKESTHEPLUNGE with 14 letters)
Swaps between accts. (TFRS with 4 letters)
Swaps (TRADES with 6 letters)
Swaps for an upgraded model (TRADESIN with 8 letters)
Swaps at a car lot (TRADESIN with 8 letters)
Swaps spots (TRADESPLACES with 12 letters)
Swaps jobs (TRADESPOSITIONS with 15 letters)