Trading style: channel breakout with a 200 pip SL, averaging about 11 pips per winning trade, sending trading signals by means of a MySQL database
Currency pairs: AUDUSD, EURJPY, AUDCAD
Price: $799

Trading style: grid limited to 3 trades, with the entries at 60 pips distance from each other, operating in an average-down style; it has a seemingly dynamic TP (10 pips overall in grid mode) and it also has an internal SL. It is possible to configure the maximum percentage of the account that is at risk. The EA is actually a signal service.
Currency pairs: EURUSD, GBPUSD
Timeframe: H1
Price: $399

Trading style: breakout trading combined with inter-range trend scalping in the US session; automatic trading combined with manual, with a variety of fundamental factors taken into account.
Currency pairs: EURUSD
EA price: $99/month

Trading style: around the clock scalping on multiple pairs.
Currency pairs: EURCAD, GBPCHF, EURUSD, USDCHF, EURGBP, USDCAD, EURCHF
Timeframe: unspecified
Expert Advisor price: $59/month (7 day trial $9.97)

Trading style: signal service based on manual trading; the details are unspecified, but the system is averaging 5 trades per day with a SL of 20-120 pips and a TP of 30-150 pips.
Currency pairs: EURUSD
Timeframe: unspecified (any for the EA)
Subscription price: $150 per month

Trading style: reversal system with dynamic SL/TP and a trailing stop.
Currency pairs: GBPUSD
Timeframe: M30
Expert Advisor price: $30/month

Trading style: basket of several concurrent trades with large SL & TP and an average duration of 2 days. According to the author, it's a mix of 80% automated trading and 20% manual. The manual input consists in increasing trade direction probability based on high impact news such as the economical issues of Greece or the USA. The trade entry & exit is fully managed by the EA, which looks for trendlines & support/resistance levels.
Currency pairs: EURUSD
Timeframe: any
Expert Advisor price: 30% of the profits it generates
Note: this is an EA that trades based on signals coming from a server.

Trading style: trades with a fixed TP in the direction of the underlying Gold trend. Multiple concurrent trades are possible, grid-style. No SL, so most likely problematic if the trend changes.
Currency pairs: XAUUSD (Gold)
Timeframe: H1
Expert Advisor price: $149