diff --git a/config.json b/config.json
index b44f0ee..810986d 100644
--- a/config.json
+++ b/config.json
@@ -1,10 +1,10 @@
 {
   "test_mode": false,
   "trade_enabled": true,
-  "arb_threshold": 0.03,
+  "arb_threshold": 0.02,
   "scan_interval_ms": 200,
-  "trade_threshold": 0.10,
-  "trade_amount_usd": 10,
+  "trade_threshold": 0.05,
+  "trade_amount_usd": 20,
   "trade_cooldown_ms": 30000,
   "alert_cooldown_sec": 300,
   "mock_slippage_pct": 0.05,
diff --git a/exchange/hyperliquid_trade.go b/exchange/hyperliquid_trade.go
index 1ba9f30..37c285d 100644
--- a/exchange/hyperliquid_trade.go
+++ b/exchange/hyperliquid_trade.go
@@ -121,9 +121,11 @@ func (h *HyperLiquidTrade) PlaceMarketOrder(coin, side, sz string) (string, erro
 	return string(respJSON), nil
 }
 
-// GetTradeFee parses the MarketOpen JSON response to extract filled size and
-// estimates the actual fee from the exchange taker rate.
-func (h *HyperLiquidTrade) GetTradeFee(orderResponseJSON string, takerFeePct float64) (feeUSD float64, err error) {
+// EstimateFeeFromResponse calculates the fee using the response's filled size × price
+// × configured taker rate. This is NOT an actual fee from HL — HL does not return
+// fee amounts in the order response. The result is equivalent to estimating from
+// TradeAmountUSD, but more accurate for partial fills since it uses actual filled sz/px.
+func (h *HyperLiquidTrade) EstimateFeeFromResponse(orderResponseJSON string, takerFeePct float64) (feeUSD float64, err error) {
 	var resp struct {
 		Statuses []struct {
 			Filled *struct {
diff --git a/trader.go b/trader.go
index b810964..8d20e6d 100644
--- a/trader.go
+++ b/trader.go
@@ -1076,9 +1076,9 @@ func (t *Trader) placeOrder(leg *PositionLeg, side string, store *PriceStore) (s
 		log.Printf("[ExRes] HL %s %s: size=%s", side, leg.Coin, size)
 
 		// Estimate fee from filled response (HL doesn't return fee in order response)
-		fee, fetchErr := t.hyperliquid.GetTradeFee(resp, takerFees[ExHyperLiquid])
+		fee, fetchErr := t.hyperliquid.EstimateFeeFromResponse(resp, takerFees[ExHyperLiquid])
 		if fetchErr != nil {
-			log.Printf("[Fee] HL GetTradeFee warning: %v", fetchErr)
+			log.Printf("[Fee] HL EstimateFeeFromResponse warning: %v", fetchErr)
 		} else {
 			log.Printf("[Fee] HL %s %s: actual fee=$%.6f", side, leg.Coin, fee)
 		}